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What is the probability that the child labeled III 1 would be a carrier of heart disease (Intermediate Core Curriculum 2.2c) if the father labeled II 2 is heterozygous? Below is a pedigree for an inherited heart disease.





A. 0%
B. 25%
C. 50%
D. 75%
E. 100%

This question is part of Genetics Unit Post-Assessment (Grade 8)
Asked by Tagscience, Last updated: Sep 15, 2020

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2 Answers

Larry Thornton

Larry Thornton

Curious about the World

Larry Thornton
Larry Thornton, Student, MBA, Los Angles

Answered Apr 03, 2019

The answer to this is C. There is a 50% chance that the child will be a carrier of heart disease. This is based on the chart and the given information. There are a lot of things that can be passed on from one generation to another and unfortunately, diseases can be passed on.

There are even times when parents do not know that they are carriers of the disease and it will only become evident when they see their child or when the disease manifests through their child. There are some people who have a higher chance of acquiring diseases too because of their genes.

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tagscience

tagscience

tagscience
Tagscience

Answered May 16, 2018

50%
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